Water-valve for instantaneous water-heaters.



PATENTED FEB. 25, 1908.

E. RUUD.

WATER VALVE FOR INSTANTANEOUS WATER HEATERS.

APPLICATION FILED APR. 8, 1907.

WITNESSES yaw G f/mvw fication.

"U ITED STATES PATENT. OFFICE.

EDWIN Rum),- or PITYTSBURG, rENNsYLvANIAQ. Q. l

, WATER-VALVE ron ms'rnnri nnnous wn'rnn nnrinrnns. l

no sra'eio.

- To all whom iii-may concern:

Be it known that I, EDWARDVRUUD, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a cert ain new anduseful Improvement in l/Vaterof automatic instantaneous waterheaters,

and its object is to provide a simple and inexpensive construction, bythe employment of piston and valve shown in elevation, on the fully 'setforth.

which the objections. heretofore obtaining in the operation ofappliances of this type will be effectually overcome, these being moreparticularly, in the binding and failure of action of the piston due tothe springing of the piping, and the comparatively large area subject toleakage, and lack of dash pot control, which causes the abnormalmovement of the piston by reaction or water hammering, thereby turningon the gas when no water is drawn from the cold water faucet, instead ofoperating to open the gas valve when, and only. when, its opening isrequired.

The improvement claimed is hereinafter In the accom 'anying drawings;Figure 1 is a longitudina section through an appliance embodying myinvention, on the line aa of Fig. 3; Fig. 2, a similar section, with thene bb of Fig. 3; and, Fig. 3, atransverse section, on the line cc ofFig, 1;.

In the practice of my invention, I provide a casing or cylinder, 1,havingone of its ends closed by alremovable cap or cover, 2, and havingformed upon its body an inlet nozzle, 3, to which is connected a watersupply pipe,

4, and an outlet nozzle, 5, to whichis connected a water delivery pipe,'6, leading to an autome tic instantaneous water heater of constructionsuch as is well known in the art. The inlet and outlet nozzles areseparated by a valve seat partition or division wall, 7, ex-

tending across the cylinder, and having a central opening controlled bya valve, 8, which 1s inthis instance shown as of cylindrical or pistonform, and fitting, when closed, in the central opening-of the partition,'7.

The valve, 8, is connected by a cylindrical body, 9, with an operatingpiston, 10, which maybe provided with a packing ring, 11, and which fitstruly in the cylinder,'1, between the cap, 2, and a transversepartition, 12, ex-

specification of Letters Patent. Application filed A rns. 1907. SerialN5. 367.081.

Patented 1761 325, 190s: f

I tending across'the cylindefr,the-space around the cylindrical body, 9,between the piston,

10, and partition, 12, serving as atlashpot chamber. The cylindricalbody 9 also acts as a guide for the piston 10-a1id valve 8. Passages,13, are formed in the body,=9, for the admission of water, atsupplypressure,

' from the inlet. nozzle to the cylinder, on'tlie outer side of thepiston, and a" communication ass'age, 14, is formed in the tubular body,to a mit a limited traverse of water fronrthe inlet to the outletnozzle. f lf -preferredfi' them function of the' passage, 14; maybe'performed by a corresponding groove or passage formed in' the perihery ofthe: valve, or the valve may be fitte sufliciently-loosely in thecentral 0 ening of the partition'fl, topermit' a limite seated in saidopening; A passage,"15," is

traverse of water around itwhen also formed in'the partition, 12; *topermit the discharge of water from the dash pot chamber to the outletnozzle, and a drain passage, 16, is formed near thebottomof saidpartition, communicating with :aadischarge opening which is closed by ascrew, 1 7.

A'plurality of recessesis formed in' the periphery'of the valve,8, atthe end thereof nearer thepiston, the Illetaili between said recessesforming guides, 'S fb'yQ which'the valve is maintained'in true; axialalinement v with the ed from seat. A valve stem, 1'8,"'abnts-egainst atransverse head, 19,, formed by a partition in the bore of thecylindrical 'body,-9, and' extends outwardly through a stufling"box,fi2O,

piston when unseate'd, andpreventeing locked or binding =against its-i-1- in the casing, in position to actuate the gas In operation, water, atsu'pply pressure,

passes from the inlet nozzle, 31,- through the passages, 13, to thecylinder space 'on the ao'ains't the enlarged endfof stem 18 andftheback or left hand'side of thepiston, 10 and also passes through thec'oin'n'iuni'catio'n passage, 14, to the outlet nozzle, 5, and, throughthe same and the connected piping of the water heater, to the spigotwhich controls the delivery of hot water. \Vhen the spigot is opened,the pressure on the delivery side of the valve, 8, and piston, 10, isthereby lowered, and the piston, 10, is forced forward,

or to the right, by the then higher pressure I on its left hand side,carrying with it and unspigot remains. operi.- The speed of move:

seating the connected valve, 8, and thereby permitting the delivery ofwater while the Inent of'the-piston: controlled by the size of the dashpot chamber discharge passage, 1.5,and thennse'ating'of the valve opensthe.

'gas valve, through the valve stern,- 18,.jin the usual -manne'r,for thepurpose of heating the water in its traverse through the heater coils.

'When the spigot is'closed, the pressure on the delivery side of thevalve begins to in-.

' crease, and as it approaches that'orr the sup ply'side' of thevalve,the 'spring,f21, returns .the piston to normal position and seats thevalve, the speed of the return movement of the piston and valve beingcontrolled by the size of the'passages, '14, and ,15, which pro.

vide for the filling oflthe chamber caused by the displacement -of,thepiston through its rearward traverse.

I claim as my invention and d sire tosecure by Letters Patent:

1. In a valve mechanism for instantaneous water heaters, the combinationof a casing provided with water inlet and outlet connections, a valvecontrolling conlmuni cation between said connectlons, a piston fitting acylindrical chamber in the casing and connected integrally to the valveby a. cylindrical body which forms a dash pot between said valve andheater, said casing also I provided with passages establishingcommunication between the inlet connection and one side of'the piston,between the opposite side of the piston and the outlet connection, andbetweenthe-inlet and outlet connections past the valve, a gas valveactuating stem connected to'the' valve, and a spring bearing onthe-valve in direction to'irnpart closing movement thereto.

2. In avalve mechanism'for instantaneous water heaters, the combinationsof a casing provided with wateiinlet and outlet. connections, a pistonand dash 'pot chamber in saidcasing separated by a partition from saidinletand outlet connections, a valve seat partition interposed betweenthe inlet and outlet connection, a valve controlling, an opening in. thevalve seat partition, a piston fitting in the piston and dash p'otchamber and connected integrally to the valve by a cylindrical body,saidcasfng also provided with passages through said cylindrical bodyestablishing cornnns.siication between said chamber and the inletconnectlon.

on one sideof the piston, between said chain ,.b er and-the outletconnection 011 the-oposite side of the piston, and between the Inlet 60.

and outlet connections past the valve, a? as valv'e actuating sternconnectedto the v ve and a spring bearing on thevalve in direction toimpart closing movement thereto.

.3. In a valvemechanism for. instantaneous water heaters,thecombinationofa casing provided with water inlet and outletconnections, 2. pistonand'da'sh pot chamber in said casing separatedapartition from said inlet andcutlet connections, a valve seat partition1nterposed between. the lnlet'and outlet connections, a valve.controllingan 1 opening in the valve seat artition,,a' piston fitting inthepiston and ash potc'ha rnber, acylindrical body passing through theparti-v tion of said chamber and connecting the pis-' ton and valve,said casing also provided with j motor, comprising a valve, a piston, 'adash" pot between the valve and p1ston,-a cylin-- 'drical bodyintegrally connecting the valve and piston and; forming a guide andprovided with a passa e for the traverse of water from one side of t. episton to the other, atransverse head formed in said-cylindrical body,

against said head. I

.and a spring actuated valve stem seated 5. In a valve mechanism-forinstantaneous water heaters, a combined water valve and motor,comprising a cylindrical valve having a lurality,ofiperiphral guides, apiston, a

tu Jular hotly connecting the valve and 'piston, passages in the bodyfor the traverse of water fr'ongi-ohe side of the piston to the otherand from one side/of the valve to the other,

and a transverse'partition in the body interposed between said passages.I

EDWVIN. RUUD..

' itnesses:

CLARENCE A. VVILLIAMs, JAMES C. HnRRoN.

